Prepare for Django 4.0

CHANGELOG.rst

@@ -3,7 +3,9 @@
 History
 =======
 
-...
+v4.4.0
+------
+* Prepare for Django 4.0
 * Support choice lookup for m2m_foreign_field (many thanks to Martin Schwier and Etienne Pouliot)
 * Fix Multiple search values when you set search_values_separator = '+' and try to search for term with + in it (many thanks to Petr Dlouhý)
 * POSSIBLE INCOMPATIBLE CHANGE: for security reason, HTML tags are now stripped by default in the rendered table; you can disable this setting AJAX_DATATABLE_STRIP_HTML_TAGS = False (thus restoring the previous behaviour); many thanks to Mich "Mike3285"

ajax_datatable/columns.py

@@ -1,5 +1,5 @@
 import datetime
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.db import models
 from .exceptions import ColumnOrderError
 from .utils import format_datetime

ajax_datatable/views.py

@@ -18,7 +18,7 @@
 from django.http import JsonResponse
 from django.template import TemplateDoesNotExist
 from django.template import loader
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from .columns import Column
 from .columns import ColumnLink
@@ -364,7 +364,14 @@ def dispatch(self, request, *args, **kwargs):
             request.REQUEST = request.GET if request.method == 'GET' else request.POST
 
         self.initialize(request)
-        if request.is_ajax():
+
+        try:
+            is_ajax_request = request.accepts("application/json")
+        except AttributeError as e:
+            # Django < 4.0
+            is_ajax_request = request.is_ajax()
+
+        if is_ajax_request:
             action = request.REQUEST.get('action', '')
             if action == 'initialize':
 
@@ -514,7 +521,13 @@ def get(self, request, *args, **kwargs):
 
         t0 = datetime.datetime.now()
 
-        if not request.is_ajax():
+        try:
+            is_ajax_request = request.accepts("application/json")
+        except AttributeError as e:
+            # Django < 4.0
+            is_ajax_request = request.is_ajax()
+
+        if not is_ajax_request:
             return HttpResponseBadRequest()
 
         try:

example/backend/models.py

@@ -3,7 +3,7 @@
 from django.urls import reverse
 from django.utils import timezone
 from django.conf import settings
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.core.exceptions import PermissionDenied
 from ajax_datatable.utils import format_datetime
 

example/frontend/ajax_datatable_views.py

@@ -1,6 +1,6 @@
 from django.contrib.auth import get_user_model
 from ajax_datatable.views import AjaxDatatableView
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.contrib.auth.models import Permission
 
 from project.query_debugger import query_debugger